Part inspection with two datum A and B

Happy new year to all
Plz tell me how to inspect this part. With 2 datum A and B.
My procedure is.
1.plane z plus top
2.line 1 at datum A
3.line at datum B
My alignment is
Plane z plus level line1 rotate y plus about z plus
And origin is at point.
Construct intersection point of two line A and B. Is orign.
MY DATUM ARE LINE A AS DATUM A
DATUM B IS LINE B.
BUT WHEN I CHECK THE TRUE POSITION OF TWO HOLE. IN FCF
THE VALUE IN X=15mm,and y is 7.4 mm
But in location when i press advance the x value is 15. But the y value 7.4 is shown in z.
I am checking it with datum reference frame.
But when i check it with current alignment it show the right vale x= 15 and y =7.4

Plz help me how i can check it with datum reference frame